Tale of a 100km/hr car.

I am green, kinda flat and long. I look kinda squarish with a yellow moon+star in front of my head. I was born in a country with many colours of people, each has their own culture and religion. Now, I am about 4years old if I'm not mistaken. I do have many sicknesses/problems such as difficulty waking up, poor vision, cracks on my butt and so on. My owner gonna send me to the hospital later for a full body check up.

Okay okay~ enough of those craps...... straight to the topic.

Once upon a time, I was a car that couldn't run fast due to my poor heartbeat, but my owner always pushed me to the limit. My average speed was 100km/hr, never below 80km/hr unless there was an old "tortoise" crawling on the right(fast) lane, in front of me. You would never see me on the left or middle lane, but you could always spot me on the right lane. If you saw me on the left or middle lane, most probably I was trying to overtake those tortoises.

One day, my owner suddenly changed into a new person. He never push me to the limit anymore. Now, my average speed is just 80km/hr, no longer 100km/hr. You will always see me on the middle or left lane, but not the right lane. One by one of the car went past me with the speed I used before this. It's my turn to feel like a tortoise now. I do really miss the old time. My owner didn't tell me about what just happened to him. Can anyone of you guess what happened? You can post your reply as a comment.